Mounting structure for horizontally pivoted windows



Aug. 14, 1956 w. M. LEESER 2,758,681

MOUNTING STRUCTURE FOR HORIZONTALLY PIVOTED wmoows Filed Feb. 18, 1953 'I/I/I/I/II 15 II: //IA IZ6 B 772mg. mmmw AT TORNEYS I r qu r n t e u e o sepa a e .hina ime United States Patent SI UCTURE FOR. PIYDTED WINDOWS Werner M. Leeser, .Cineinnati, Ohio, assignor' to The Steelcraft Manufacturing (dumpzmy, Rossmoyne, .Ohio, asonporation ofDhio Applicatio Februa y 8, 1. 5.3, 33738;

3 Claims. (Cl. 1sa-v-asa) This invention relates generally to industrial windows and is directed in particular to animproved structure for pivotally mounting a ventilator sash, adapting the sash to be tilted selectively to open or closed positions for ventilation or weather protection,

Window units of this type are known in the building industry as horizontally pivoted windows since they. eons ist in general of a window frame fiXedpermane-ntly-in-a window opening, with the ventilator sash pivoted upon a horizontal axis near its center, suoh that the plane hfthe sash in tilted position intersects the plane of the frame. Both the window frame and sash areusually fabricated ,from metal framing members, in most insganees steel rails, which are fitted and joined together bywelding' or .t et aa Horizontally pivoted windows are used extensively in leorurnercia l buildings, such as schools, otliees, and factories, and are particularly suited for such utility sinee they. are simple and rugged in eonstruction and'can *be adjusted conveniently to open r closed positions. It will be reeognized ,that a weather seal must'b provided around the perimeter of the ventilating sash for cold weather protection and that weather sealing means must be provided in conjunction with the hinge or pivot connections Prev nt leak g since the pivot .e n ee iinte p the continuity of the weather'seal. i

The hinge .or pivot mountings utilized in the past'have be n nn atiet eter o era ea e' w d y used o m f r ex mp e th P l o t n r a ,taehed to the frameland sash as separate elements thus requiring a w d n r r et n p r e n' sse l g the window unit Another disadvantage, whieh'is com- .110 the know R et s r t es a i s f m th f e t the p t preie t u ar y be ond the Blame t j wi dow nit; hence the pa ts a e u je t vte' n pa t slu iaalldliflg a sllu e, au ing be din .q the pa t i h leads to looseness or binding of the sash.

t ha been a p m ry obje o th P eeen. n en to p ovide a s mpli ed sash me ntin n wea her eeelins st u tu e in hi h the ri e m un in 9 9M19 reeialed and ,pro eted pes ien w th nf e P1.... e e th sa h a d i w fr me and i wh ch the ri 9. 1 91- ins ons i u s a nte ra par of the wi dow e withattendant a taehmen o web p rts by we or the like.

A t the obj c ha been o esid s e1,P. l s1.a 9- i setu e u e uned .q shee m ta w el i e afisu ete torwr d i t el. e perat n hins r t l Uehaped n ss section to ii e i' erl ua ty i a t seem in radia l ad tr a s eentee w th .a'riret pin, with the m ta .u-shaped e ions in latera bednstqntact with one another to maintain the sashin aeeprgte regist wit the rame openin '.A u he o je t ha been t ineorneret the rheum- ..ingtstrue u ea wea he eee e tendinsab. the .a tim te of th venti a o sa h i eeop ratiee wi h ri et e w h e tabl sh w sl ns eagesement, so e 19 semice 2, piete'ly weather seal the sash when it is shifted to closed position.

In its-simplest. aspect, the invention resides in the use of sheet metal weathering or mounting strips .pivotally connected together intermediate their length and coextensively attached respectively to the window frame and to the ventilator sash to pivotally support the sash relative to. the frame and to provide a weather seal extending around the entire'perimeter of the ventilator sash. one setlof weathering strips extends upwardly from the pivotal axis and-is secured alongthe vertical sidesand top of the sash toprovide the seal above the pivotal axis while the other. set extends downwardly from the axis and is secured along the sides and "bottom of the-window frame to provide a seal below the pivotal axis.

The two sets of weathering strips are identical but since the upper and lower portions of the: sash project from opposite sides of the frame when open, the strips 05 the respective :sets are oppositely related to one an- .other-to-p'rovide abutments facing in opposite directions. In the present disclosure, the upper portion of" the" sash projects inwardly when opened and the lower portion projects outwardly; accordingly, the weathering strips {or the-upper portion are attached to the sash while those for the lower'portion are attached to the window frame and support 't-heweight load of the sash.

As noted above, an important aspect of the invention resides in the use of sheet metal weathering strips of U-shaped cross section, to function :both as alseal'and to providea strong wear resistant' pivotal connectionwithin the-plane of the weathering strip for protection and concealment, For this purpose the adjoining ends of th'e upper and lower weathering sets of strips are partially severed and doubled over to form corresponding tenon's or hinge sections integral with the strips, each being U-shaped in cross section and being slightly less than half the thickness of the U-shaped weathering strip proper. The two tenons nest with one another in interfit-tegl relationship and the pivot pin joins them together; thusthe U-shaped configuration provides the multiple spaced bearings and the lateral or axial'hearing surfaces without the addition of any parts except the pivot pin.

In order to provide the seal atflt he pivotal connection betweenthe two sets of weathering strips, the ends of one set of strips, at the joint, are provided with sealing sectors as an integral part of the strips. The sectors establish-sealswiththe ends of the adjoining set of strips when the sash is closed. The sheet metal construction of the tenons and sealing sectors is such that the parts are capable of being formed cheaply and accurately "-by fiuneh and die operations. The structure forms a sir nple inge or pivot connectionhavingmauimum strength and rigidity and presents a neat and trim appearanee sinee 'th'ere are' no parts protruding from thesurface of the sash or window frame. 7

Commercial steel pivoted windows are firrnished in several different sizes and styles, all including a -l lXed window frame and a pivotally mounted ventilator sash. The larger sizes may be provided with additional panes in the-fixed 'framejpa rtially or completely surrounding the ventilator sash and providing additional window area. it will be nnderstood that it is intended to incorporate the present improvements in such larger frames without a nyehange;instructure. It will also be understood'th at the-present ventilator sash can be installed in multiples, fior'example; individual units joined together by mu-llion stri ,s. I v v n rther advantages and features of the inventionywill be ppa fr th e 's t ed s e ia e'n ieke in eq i ee en w t th r ng from the interior of a building, illustrating the horizontally pivoted ventilator sash in open position.

Figure 2 is an enlarged fragmentary face view of a portion of the window frame and ventilator frame in closed position, detailing the pivotal mounting structure which connects the sash frame to the window frame.

Figure 3 is an enlarged fragmentary rear view, as projected from Figure 2, partially broken away to further illustrate the pivotal mounting structure of the ventilator sash.

Figure 4 is a cross sectional view taken on line 4-4, Figure 2, detailing the structure of the sash frame and its relationship to the window frame in closed position, in a plane above the pivotal axis of the ventilator sash.

Figure 5 is a cross sectional view taken on line 5-5, Figure 6, detailing the pivotal mounting of the sash frame with respect to the window frame.

Figure 6 is a cross sectional view taken on line 6-6, Figure 2, illustrating the frame structure in a plane below the pivotal axis and showing the relationship of the sash frame to the window frame in closed position.

Figure 7 is a longitudinal sectional view, taken on line 7-7, Figure 2, further detailing the pivotal mounting structure with particular reference to the sealing sector at the pivotal axis of the ventilator frame.

Figure 8 is a sectional view similar to Figure 7 showing the ventilator frame in open position with respect to the window frame, corresponding to Figure 1, and further illustrating the operation of the sealing sector in conjunction with the pivot pin.

Figure 9 is an enlarged diagrammatic view taken from Figure 8, further illustrating the seal of Figure 8.

Described generally with reference to Figure l, the window frame, which is indicated at 10, is fabricated from metal framing members, preferably steel, and follows a design conventionally employed in the construction of commercial buildings in which the window frame is set in masonry walls. The frame includes a marginal flange or masonry fin 11 which is embedded in the masonry wall opening and which provides a weatherproof joint with respect to the opening. In the present structure, which is intended to disclose a preferred embodiment of the invention, the window frame includes a pair of fixed window panes 12-12 respectively at the top and bottom, and a ventilator sash indicated generally at 13, which is pivoted intermediate its length for movement about a horizontal axis with respect to the frame.

Both the window frame and ventilator frame proper are fabricated from steel framing members which are usually hot rolled to provide the necessary configuration in cross section as explained in detail later. The adjoining ends of the framing members are mitered and joined by welding or riveting in a conventional manner. It will also be understood that the external masonry fin 11 is conventional and is furnished in various forms. These fins or like members are interfitted in suitable slots formed in the masonry window opening and thus lock the window frame rigidly in position. In order to provide a weather seal, a grouting or caulking compound is packed into the slot and around the fin, depending upon the particular type of installation.

The sash mounting structure of the present invention is interrelated with the window frame, and as explained later in detail, the mounting structure is in the form of cooperating weathering strips pivoted together and attached respectively to the window frame and ventilator frame. As best shown in Figure 1, the window frame 10 includes an opening 14 in which the ventilator sash is pivoted, and which cooperates with the sash to provide a weather seal about the ventilator sash when it is closed.

Described in detail with reference to Figure 1, the window frame 10 includes the vertical jambs or side rails 15-15, and top and bottom horizontal rails 16-16, all

consisting of steel angle irons as illustrated in Figure 4. One limb of the angle iron provides the masonry fin 11 and the second limb, which is indicated at 17, delineates the internal frame of the window, and includes an internal flange 18.

It will be noted at this point, that flange 18 forms a 5 seat for the glass panels or panes 12 at the top and bottom of the window frame and that it also projects inwardly along the sides of opening 14, providing a stop engageable by the marginal edges of the ventilating sash 13. The opening 14 additionally includes a head rail 20 and a sill 21, which delineate the top and bottom of opening, and which are engageable by the upper and lower edges of the ventilator sash when in closed position.

It will be understood that the flange 18 is continuous of the full internal perimeter of frame 10 and that the glass panes 12 are seated against the flange and sealed in by putty or glazing compound in the usual manner. The vertical divider rails 22-22 of the window frame are generally T-shaped in cross section to provide a pair of flanges similar to flange 18, suitable to engage the marginal edges of adjacent panes 12-12.

The ventilator sash 13 includes an external frame formed of rails 23 having generally T-shaped heads 24 (Figure 4) similar to the dividers 22 above noted. In the present disclosure, the ventilating sash is provided with vertical and horizontal divider rails 25-25, which are also T-shaped in cross section, similar to rail 23, adapted to mount the four glass panes 26. The ventilator sash is mounted for pivotal motion about a horizontal axis by means of the pivot pins 27-27 as described in detail later. The ventilating sash, as best shown in Figure l, is provided with a chain or a cord 28, attached to the upper edge of the sash and anchored at its free end upon a hook 30, or the like which is attached to the divider rail 22 of the window frame. A latch 31 which is mounted upon the lower cross rail of the tiltable ventilator sash, is adapted to engage the lower rail or sill 21 in closed position, to lock the ventilator sash in closed position. The latch is of conventional construction and for this reason is not disclosed in detail. if desired, a notched bar (not shown) may be pivotally connected to the lower edge of the ventilator sash in the conventional manner. In this case, the notches engage the sill 21 and lock the sash in its selected open or closed positions.

As best shown in Figure 4, the side rails or framing members 23 of the ventilator sash, extending from the pivot point upwardly, are provided with sheet metal weathering strips of U-shaped cross section, indicated generally at 32, and secured to the leg 33 of the framing member by spot welding as indicated at 34. It will be noted that each U-shaped weathering strip thus provides two outwardly projecting limbs 35 and 36, which are adapted to provide a line contact respectively with the flange 18 and the end of leg 17 of the window frame, thus forming a double weather seal.

The weathering strips, as shown in Figure 4, extend upwardly from the pivot pins 27 along opposite sides of the ventilator sash and across the upper edge of the sash. In other words, the constructions along the two sides and top are identical to that shown in Figure 4, such that the limbs 35 and 36 contact the inner surfaces of the main window frame, allowing the upper portion of the ventilator sash to swing inwardly and the lower portion outwardly, as shown in Figure 1.

From the foregoing it will be apparent that the internal flange 18 of the main window frame provides an external marginal abutment for the glass panes 12 in the upper section of the window frame as indicated by the broken lines in Figure 4, and that the same flange functions as a stop for the ventilating sash within opening 14, as indicated in Figure 4.

It will also be apparent that the T-shaped framing member 23 of the ventilating sash provides a similar marginal frame for the glass panes 26 on one side, as indicated in broken lines in Figure 4 and provides a support for the 'U-shaped weathering strip 32 on its opposite side. By

unit and requires no separate parts, with attendant welding of separate attaching means. The structure completely conceals and protects the pivot bearings and thus eliminates the possibility of damage during shipment or in use, since there are no protruding parts. The hinge further provides generous bearing surfaces, both radially and axially, to provide easy operation and long service without undue wear and with little or no service or maintenance.

Having described my invention 1 claim:

1. A pivotal mounting structure for a window unit having a stationary window frame and a sash frame mounted therein for tilting motion along a horizontal axis to an open or closed position, said mounting structure comprising, a pair of stationary mounting strips and a pair of pivotal mounting strips, said stationary and pivotal mounting strips being U-shaped in cross section having a web and an inner and outer limb, a hinge tenon on the end portion of each strip, each tenon being substantially half the width of said outer limb and being offset laterally to the web of the mounting strip, each tenon having a length substantially equal to the width of said outer limb, each tenon formed by severing said outer limb along a line extending transversely from the free edge thereof toward said web, said severed portion bent inwardly at right angles to the plane of the outer limb and providing an inturned limb spaced outwardly from the web, the webs of the stationary mounting strips being facially secured to a respective opposite side of the stationary frame with said limbs projecting inwardly toward one another and the oifset hinge tenons thereof projecting across the said horizontal axis, the webs of the pivotal strips being facially secured to the sash frame with the limbs projecting outwardly from opposite sides of the sash frame and the offset hinge tenon thereof projecting across said horizontal axis from a direction opposite to the tenons of stationary strips, the offset hinge tenons of said stationary and pivotal mounting strips being nested lengthwise with the respective inturned limbs thereof residing in facial bearing engagement with one another, and a respective pivot pin projecting through the nested hinge tenons on opposite sides of the window unit, said pivot pins disposed along said horizontal axis, the weight load of the sash frame being carried by said nested hinge tenons and pivot pins.

2. A pivotal mounting structure for a window unit having a stationary window frame and a sash frame mounted therein for tilting motion along a horizontal axis to an open or closed position, said mounting structure comprising, a pair of stationary mounting strips and a pair of pivotal mounting strips, said stationary and pivotal mounting strips being U-shaped in cross section having a web and an inner and outer limb, a hinge tenon on the end portion of each strip, each tenon being substantially half the width of said outer limb and being offset laterally to the web of the mounting strip, each tenon formed by severing said outer limb along a line extending transversely from the free edge thereof toward said web, said severed portion bent-inwardly at right angles to the plane of the outer limb and providing an inturned limb spaced outwardly from the web, the Web of each stationary mounting strip being facially welded to a respective opposite side of the stationary frame with the offset hinge tenons thereof projecting upwardly across the said horizontal axis, the web of each pivotal mounting strip being facially Welded to the sash frame with the offset hinge tenons thereof projecting downwardly across said horizontal axis, the offset tenons of the stationary and pivotal mounting strips being nested lengthwise with the respective inturned limbs thereof residing in facial bearing engagement with one another, and a respective pivot pin projecting through the sash frame and stationary frame and through the said nested tenons, said pivot pins residing along said horizontal axis, the weight load of the sash frame being carried by said hinge tenons and pivot pins, said hinge tenons and frames providing multiple load bearing sections spaced along the axis of each pivot pin, the weight load of the sash frame being carried by the said multiple load bearing sections and pivot pins.

3. A pivotal mounting structure for a Window unit having a stationary window frame and a sash frame mounted therein for tilting motion along a horizontal axis to an open or closed position, said mounting structure comprising, a pair of stationary mounting strips and a pair of pivotal mounting strips, said stationary and pivotal mounting strips being U-shaped in cross section having a web and an inner and outer limb, a hinge tenon on the end portion of each strip, each tenon being substantially half the width of said outer limb and being otfset laterally to the web of the U-shaped strip, each tenon formed by severing said outer limb along a line extending transversely from the free edge thereof toward said web, said severed limb portion bent inwardly at right angles to the plane of the outer limb and providing an inturned limb spaced outwardly from the web, the web of each stationary mounting strip being facially welded to a respective opposite side of the stationary frame with the offset hinge tenons thereof projecting upwardly across the said horizontal axis, the Web of each pivotal strip being facially welded to the sash frame with the offset hinge tenons thereof projecting downwardly across said horizontal axis, the offset tenons of the stationary and pivotal mounting strips being nested lengthwise with the respective inturned limbs thereof in facial bearing engagement with one another, a respective pivot pin projecting through the nested hinge tenons, said pivot pins disposed along said horizontal axis, the weight load of the sash frame being carried by said hinge tenons and pivot pins, a contact sector formed on the upper end of the outer web of each stationary mounting strip, said sector being curved in an arc extending upwardly from the outer web inwardly toward the pivot pin and passing beyond the axis thereof, the outer Web of each pivotal mounting strip having a free lower end adjacent said contact sector, said free edge swinging in an are which converges downwardly to ward the curved sector as the sash frame tilts toward the closed position, said free edge providing a wedging engagement with said sector when the sash frame is in closed position.

References Cited in the file of this patent UNITED STATES PATENTS 805,409 Brown Nov. 21, 1905 871,715 Lunken et al. Nov. 19, 1907 993,529 Kahn May 30, 1911 1,012,225 Roper Dec. 19, 1911 1,045,265 Davock Nov. 26, 1912 1,101,187 Kahn June 23, 1914 1,584,970 Berger May 18, 1926 

